Google Sheets, the spreadsheet tool that's part of the Google Apps productivity suite, lets users format cells based on certain conditions, including the date contained in a cell and how far away that date is from the present. But the options available through the Conditional Formatting dialog are limited. Here's a way around those limitations.

Researchers at Brown University have developed a data shuffling technique that aims to improve security of data stored in the cloud by hiding usage patterns, which can be analyzed to reveal secret information.